To calculate the sum-of-the-years' digits, you add up each of the years of an asset's useful life. So for example, if an asset had a useful life of six years, you would add up 6 + 5 + 4 + 3 + 2 + 1 = 21. From there, you would take the sum, in this case 21, then...
Use spatial joins to summarize data within a geographic area and calculate statistics (counts, min, max, mean, etc.). Sample: What is the percentage of each parcel that is in a floodplain? How many miles of bike paths are in each neighborhood? Perform overlays (identity, intersect, union)...
To calculate the fluid loss from retinal blood-brain barrier we can use Starling equation for fluid filtration (Yuan and R.R., 2010), but to do this we need to estimate driving pressures and the hydraulic conductivity for the blood-brain barrier (in units of cm3 of transudate/s/cm H2O...
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